In 1918, he received an adverse evaluation for being drunk. Quarterly reports were required to follow-up, but at the end of the year, Captain (D), Sixth Destroyer FlotillaW. Tomkinson gave a satisfactory evaluation.[3]

Post-War

Dunster was demobilised on 27 August 1919 and awarded an R.D. in 1921. He retired on 7 September 1922.